Lab Desiccants and Drying Agents
Hygroscopic substances and drying agents for use in laboratory settings; drying agents are commonly used to keep other substances and samples dry, or to prevent moisture from forming on/in containers. Products include drying tubes, kits, etc.
Desiccants are typically chemicals or compounds that are hydroscopic (readily absorb moisture). Common desiccants include clays, silica gels, and calcium sulfate.
In the lab, desiccants are commonly used in desiccators and desiccator cabinets, with in-line air and gas drying columns, in absorption bulbs, U-tubes, glove boxes, sealed chambers, and wherever a dry environment is required. They are also used during transport, for storage, and maintaining materials and products ─ everything from clothing to electronics.
The moisture may come from a variety of sources:
- Water vapor in the air
- Moisture in packaging materials
- Moisture from permeation or leakage
Some desiccants contain an indicator or additive that produces a color change with moisture absorption. The indicator allows the user to see when the desiccant has absorbed its maximum amount of moisture and needs to be replaced or regenerated.
Some desiccants can be reused many times simply by heating them in an oven to allow moisture to evaporate. For indicating desiccants, one can also easily tell when the desiccant is again ready to use by the change back to the original color.
Desiccants may be available in a range of mesh or particle sizes. The Tyler Equivalent is a common type of mesh sizing and indicates the number of openings per linear inch of mesh. Common desiccant mesh sizes are 4, 8, and 10 to 12. Size 4 is typically used in gas phase applications; they are larger and less likely to break. Size 8 is smaller and can be more tightly packed.
Sigma Aldrich Fine Chemicals Biosciences Florisil(R) 100-200 mesh | 1343-88-0 | MFCD00078249 | 1KG
Florisil(R) 100-200 mesh | Mol Wt: 100.39 | 1343-88-0 | MFCD00078249 | 1KG
Sigma Aldrich Fine Chemicals Biosciences Dextrin from corn Type I p1KG
DEXTRIN Dextrin from corn Type I p1KG
Electron Microscopy Sciences Desiccant Canister
Ideal for dry control of desiccator cabinets. Moisture is absorbed through the perforations in the aluminum case, which contains silica gel. This 2 x 4" canister maintains a safe level of humidity in 3cu.ft (0.8 cu. meter) area. When the monitor window turns pink, the silica gel is saturated. It can be regenerated in a 300 degree F (150 degree C) oven in about 3 hours. The monitor window will be blue in color when recharged.
Pfaltz & Bauer Drierite @ 8 Mesh With Indicat| 1 lb| 7778-18-9
Drierite @ 8 Mesh With Indicat| 1 lb| 7778-18-9
Electron Microscopy Sciences Dextrose, Anhydrous, Reagent 500 GR
(D-Glucose)
CAS #50-99-7 C₆H₁₂O₆ F.W. 180.16
Assay: 99.8%
LUKNOVA INC High Purity Silica Gel, Particle Size 40-63 µm (230-400 Mesh), Pore Size 60 Å, Ph Range 6.8-7.2. This Unit Comes At 500 Gram Per Bottle. Standard Silica Gel Has Irregular Shape And Great For Chromatography Application.
High Purity Silica Gel, Particle Size 40-63 µm (230-400 Mesh), Pore Size 60 Å, Pore Volume 0.75 Ml/G, Surface Area 500M2/G, Ph Range 6.8-7.2. This Unit Comes At 500 Gram Per Plastic Bottle. This Standard Silica Gel Has Irregular Shape And Free-Flowing Fine Powder Form And Great For Flash Chromatography Application With Sample Loading Up To 10-Wt%. It Has Narrow Particle Size Distribution And Narrow Ph Range Which Enable Significant Advantages In Purification Efficiency, Resolution, And Column Reproducibility. Cas Number 112926-00-8.
Hach Company Silica Gel Desiccant with Indicator, 454 g
Silica Gel with Indicator for use as desiccating agent. Drying agent. 454 g bottle.
Hach Company Desiccant Cartridge, 6/pk
These silica gel desiccant cartridges are used with the dry storage chamber for the Portable LDO Probe.
Uline Silica Gel Desiccants - Gram Size 1, 5 Gallon Pail
Silica Gel Desiccants - Gram Size 1, 5 Gallon Pail
Electron Microscopy Sciences Silica Gel Bulk Desiccant, 2 Lbs
Changes color when it reaches max absorption capacity.
Medchemexpress LLC Industrial liquors, corn steep liquor | 66071-94-1 | MFCD00130866 | Not applicable - complex mixture (no single molecular weight) | Not applicable - complex mixture (no single chemical formula) | 1 KG
Corn steep liquor is a food-industry by-product used as a nutrient-rich additive for microbial culture media. It promotes fungal mycelial growth and can increase production of secondary metabolites and other biologically active compounds.
- nutrient-rich fermentation supplement.
- promotes mycelial growth and biomass accumulation.
- enhances secondary metabolite and product yields.
- available as powder or concentrated liquid formulations.
- suitable for research use; follow supplier storage recommendations.
Sorbent Technologies Inc Activated Alumina Spheres, 1/8in, 3.2mm, 1kg
The activated alumina spheres are very porous, have a high surface area, and do not change form. They will not soften or disintegrate when immersed in liquids. When used to adsorb water, they act as an efficient desiccant. Molecules with the highest polarity are preferentially adsorbed. In the absence of irreversible fowling, they may be regenerated by heating to a temperature between 177-316C. Applications: Drying and purification of organic liquids and gases; adsorption of heavy metals such as fluorides, phosphates, arsenic acids, and humic acids; purification of processing liquids, industrial water, and waste water by removing highly polar compounds such as: TBC, alcohols, ethers, etc.; removal of acids formed from the degradation of transformer oils, lubricating oils, and refrigerants; removal of residual halides and water during the manufacture of chlorinated and/or fluorinated hydrocarbons, yielding a non-corrosive product.